includes/
├── Config/          # Configuration management
├── Controller/      # Priority 30 - HTTP/Admin request handlers
│   ├── Admin/       # DashboardController, LogsController, SettingsController
│   └── ContactForm/ # SubmissionController
├── Core/            # Priority 10 - Bootstrap & lifecycle
│   ├── Plugin.php
│   ├── Activator.php
│   └── Interfaces/
├── Exception/       # Custom exceptions
├── Infrastructure/  # WordPress integrations (ListTable, Widget, Handler)
├── Model/           # Domain models (no LoadableInterface)
│   ├── LogEntry.php
│   ├── FormSettings.php
│   ├── ApiResponse.php
│   └── Statistics.php
├── Repository/      # Data access interfaces
├── Service/         # Priority 20 - Business logic
│   ├── Api/         # ApiClient
│   ├── ContactForm/ # SubmissionProcessor
│   ├── Export/      # ExportService
│   ├── Logging/     # LogWriter, LogReader, LogStatistics, RetryManager
│   ├── Migration/   # MigrationService
│   ├── Notification/# EmailAlertService
│   └── Security/    # EncryptionService, SensitiveDataPatterns
├── Utils/           # Priority 40 - Utilities
└── View/            # HTML rendering (static classes)
    ├── Admin/       # Dashboard/, Logs/, Settings/
    └── ContactForm/ # IntegrationView

<?php
/**
 * Service Name
 *
 * Description of what this service does.
 *
 * @package SilverAssist\ContactFormToAPI
 * @subpackage Service\Category
 * @since X.Y.Z
 * @version X.Y.Z
 */

namespace SilverAssist\ContactFormToAPI\Service\Category;

use SilverAssist\ContactFormToAPI\Core\Interfaces\LoadableInterface;

\defined('ABSPATH') || exit;

/**
 * Class ServiceName
 *
 * Detailed description.
 */
class ServiceName implements LoadableInterface {
    /**
     * Singleton instance.
     *
     * @var self|null
     */
    private static ?self $instance = null;

    /**
     * Get singleton instance.
     *
     * @return self
     */
    public static function instance(): self {
        if (null === self::$instance) {
            self::$instance = new self();
        }
        return self::$instance;
    }

    /**
     * Private constructor for singleton.
     */
    private function __construct() {}

    /**
     * Initialize the service.
     *
     * @return void
     */
    public function init(): void {
        // Register hooks here.
    }

    /**
     * Get loading priority.
     *
     * @return int
     */
    public function get_priority(): int {
        return 20;
    }

    /**
     * Check if should load.
     *
     * @return bool
     */
    public function should_load(): bool {
        return true;
    }
}

<?php
/**
 * View Name
 *
 * HTML rendering for feature.
 * NOTE: Views receive all data as parameters - never instantiate Services here.
 *
 * @package SilverAssist\ContactFormToAPI
 * @subpackage View\Category
 * @since X.Y.Z
 * @version X.Y.Z
 */

namespace SilverAssist\ContactFormToAPI\View\Category;

\defined('ABSPATH') || exit;

/**
 * Class ViewName
 *
 * Renders HTML for feature.
 */
class ViewName {
    /**
     * Render the main view.
     *
     * All data must be passed as parameters from the Controller.
     * Views should NEVER instantiate Services directly.
     *
     * @param array<string, mixed> $data    Data to render (prepared by Controller).
     * @param string               $context Additional context (computed by Controller).
     * @return void
     */
    public static function render(array $data, string $context): void {
        // ✅ CORRECT: Only use data passed as parameters.
        // ❌ WRONG: $service = new SomeService(); $data = $service->getData();
        ?>
        <div class="wrap">
            <h1><?php \esc_html_e('Title', 'contact-form-to-api'); ?></h1>
            <p><?php echo \esc_html($context); ?></p>
            <!-- HTML content using $data -->
        </div>
        <?php
    }
}

private function get_components(): array {
    return [
        // ... existing components
        \SilverAssist\ContactFormToAPI\Service\Category\ServiceName::class,
    ];
}

use SilverAssist\ContactFormToAPI\Service\Category\ServiceName;

vendor/bin/phpcs includes/Service/Category/ServiceName.php
vendor/bin/phpstan analyse includes/ --level=8